I’m researching several winter projects some of which require drilling holes through transom and running wires. If I do them I’ll make separate threads for each. Projects in mind are:

- Trim Tab Indication at Helm. Currently have Bennett Hydraulic (OEM I guess) Tabs but there’s no indicators at the helm and I just have to guess their position. I’ve researched and know the parts to get.

- Possibly stern thruster. Again, I’ve found the product and parts list.

- Under water lights. Still researching the parts. Recommendations solicited!

- RV100 Transducer that came with my Chartplotter. I have read and will do more research that a transom mounted transducer is ineffective due to Propwash? I don’t fish but since I have the equipment it would be cool to view the 3d products. Any input from you guys would be appreciated. I’ve also read at low speeds the transom mounted transducer is OK? Other articles I’ve read say put a thru hull RV200 in front of the props for full benefit.

ALL of the above modifications require drilling through the transom to run the wires. I’ve done this before on other boats I’ve owned without issue and feel comfortable doing so. However; with this 1998 405 Aft Cabin it appears to be virtually impossible to maneuver the wires through the transom to the area under the Aft Cabin bed area in order to send them to the appropriate location. It looks like the Aft Fuel tank blocks all viewing and access of the transom?

Is there a trade secret to maneuvering that area? My plan is DIY this winter when I pull the boat for inspecting below waterline.

Thanks in advance!